package com.tz.service;

/**
 * Account Service 接口类
 */
public interface AccountService {

	/**
	 * 模拟转账功能
	 * @param from 转出账户
	 * @param to 转入账户
	 * @param amount 转账金额
	 * @return 操作结果字符串
	 */
	String transfer(int from , int to , double amount);

}
